Machine for soldering metal plates.



H. P. A. A EIOHMANN. MACHINE FOR SOLDERING METAL PLATES.

APPLICATION FILED JAN. 15, 1910.

Patented June 20, 1911.

4 SHEETS-SHEET 1.

WITNESSES APPLICATION FILED JAN.15, 1910.

Patented June 20, 1911.

4 SHEETS-SHEET 2.

WITNESSES H. P. A. A. EIOHMANN. MACHINE FOR SOLDERING METAL PLATES.APPLICATION IiILEI) JANQM, 1910. V 995,589. I Patented June 20, 1911.

4 SHEETS-SHEET 3.

' ATZO/VEV H. P. A. A. EIOHMANN' MACHINE FOR SOLDERING METAL PLATES;APPLICATION FILED JAN.15, 1910.

995,589, Patented June 20,1911.

' 4 SHEETSSHEET 4.

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*5 l w K (34 36 34 W/TNESSES To all whom it may concern:

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.MILCHINE F02: SOLDERING- METAL ELATES.

assess.

' fipeeification of Letters was. I pm m June as, 1911,

Application filed January 15, 1910. Serial l lo. 538,295;

-Be it known that I, HEKNRY P. A. A. EIGH- MANN, a. citizen of theUnited States of America, residing at Corona, in the county on sheetsteel.

My object is to providev superior mecha-' nism for producing such aproduct in the form of finished sheets especially adapted to bemanufactured into fire-proof and rust proof doors, window casings etc.,which by reason of the copper exterior will possess all the externalattractiveness of solid bronze, and by reason of the steel interior,will also possess the strength of that material. To this end myinvention consists in the peculiar features and combinations of partsmore fully described hereinafter and pointed out in the claims.

In the accompanying drawings :-F1gure l, represents a side elevation ofmy complete machine, Fig. 2, a longitudinal section there of whereinsome of the parts are shown in elevation, Fig. 3, a vertical section onan enlarged scale of that part of the machine .which supplies the acid,solder and tin to the metal sheets; Fig. 4:, a detail View of theautomatic solder supplying mechanism, and Fig. .5, a transverse sectionthrough one end of the machine.

The reference numeral 1 represents a sheet of copper or bronze, and 2 asheet of steel. 3 is a feed table'located before the receiving end ofthe machine. This table has two stories, the upper story being adaptedto receive the sheets of copper 1, and the lower 1 story the sheets ofsteel. 2;

4t and 5 are feed rolls which take the sheet of steel 2 as it comes fromthe table and carry'it forward beneath an acid-supplying roll 6 againstwhich it is held by an upwardly pressing roll 7 having an adjustingscrew43. An intermediateiidler l i supports the steel sheet 2 on'lts way tothe acid roll. The feed table 3 is provided with anti-friction rollers 33 'represents 'asupporting idler carried on arms 3. This idler supportsthe upper sheet 1 as it is passed from the top, story of the feed-tableto the top of the acid roll 6. Said feed rolls and theacid roll andtheir associated parts are journaled in,a

housing 14. -The lower periphery of the acid-supplying roll 6 is 1n linewith the meeting portions of the peripheries of the feed rollsd and 5,and so are the meeting peripheries of the subsequentsoldering andfinishing rolls. v

A gravity roll 15 presses the coppersheet '1 down on the acid roll 6.This acidroll is their contiguous surfaces next' pass under anoscillatory solder tank .2l eccentrically -hinged at 21 tethe lower endof a vertical supply pipe 20 coming froma solder reservoir 19 abovecontaining a supply of molten solder 19 WVhile the steel sheet 2 passingunder the tank2l it tilts and supports the latter against gravitysufliciently to discharge its contents through orifices 22 in the sideof the tank onto the lower" sheet.

23 is a soldershut-ofirod having a valve 25 on its crooked upper endwhich seats in and closes the mouth of pipe 20. Therod 23 iseccentrically hinged at its lower end 24 to the end of the oscillatorytank 21'. When the sheet steel .2 passes out from under the tank 21, andremoves the support therefrom, the latter drops below the line of saidsheet, carrying with it the rod 23 and closing the valve 25, whereby thesupply of solder is stopped. A turn-buckle 8 in the rod 23 permitsadjustment of the valve 25 on its seat. Burners 49 and 26 keep thesolder in the reservoir 19 and tank 21 in molten condition. Acid issupplied to the under side of the steel sheet by an acid roll 27operating in an acid trough 28. This is done prior to receiving acoating of tin.

29 is a tin tank adapted to contain molten tin and kept hotlrby a burner30. Next in tin from the tank 29 and applies it to the bottom of thesheet of steel2. The upper roll of these two is heated by a perforatedgas pipe 32.

' Following the position of the soldering rolls. is a series offinishing rolls 13 preceded by cleaning brushes 12' which brushes areheld against the passing sheets by coil springs 45. The journals of theupper row of finishing and cooling rolls 13 are journaled in verticallymovable boxes 50 which adjusting-screw 42. (not shown in Fig. 1)

hold each pair of rollers 35 adjustably down on each upper roll 13. Inthe present case and for illustration, four pairs of finishing andcooling rolls and their associated parts are used. The lower coolingrolls 13-rest on rollers 36, and preferably extend into depressions 34in plate 34.

Thus constructed the o eration of the mechanism, may be briefly escribedas follows: The two sheets 1 and 2 of metal are fed simultaneously fromthe feed table into the machine. The lower slieet of steel is firstgripped by rolls 4 and 5 which force it forward between the rolls 6 and7. The roll 6 supplies the necessary amount of acid to the top of thesaid steel sheet. The iipper sheet of copper 1 is gripped between theroll 15 and the top of acid roll 6 and the mechanism is timed to move.it' forward in unison with the lower sheet- 2 and to supply acid to itsunder side at the same time. Thus the two contiguous sides of the sheetsare sup plied with acid preliminary to pressing them together. The steelsheet is carried forward under the hinged solder tank 21 which deliversa predetermined supply of solder -to the top of'the sheet, and spreadsit out as the sheet moves under the tank. Continuing the steel sheetpasses over an acid roller '27 which supplies the under side of thesheet with acid preliminary to receiving the tin which comes up fromtank 29. Thus the steel is protected from rust on one side by copper,and on the other side by tin. The

two sheets next pass between rolls 10 and 11 I the pressure of whichshould be great enough to unite them, and at the same time apply thetin, aften which the work, that is to say the united and tinned sheets,passes on through the rolls 13 which complete the cooling and finisliingoperation. As soon as the steel sheet passes out from under the soldertank 21, the latter drops down, and

soldering rolls.

of its axis, and means 'for bringing sheets together after they have hadthe acid pulling down rod 23 and valve 25, shuts off the flow of solderfrom the reservoir 19 above.

Any suitable arrangement of driving gearing between the various drivenrolls may be employed, that shown comprlsmg Having thus described my1nvention,what

I claim as new and desire to secure by Let ters Patent, is: 1. A machinefor uniting sheet metal plates and the like, consisting of thecombination with suitable feeding mechanism, of

means located between the paths of these in- 1 going sheets, forsupplying molten metal to the sheets,-solderi'ng rolls for pressing theprepared sheets together, and cooling rolls which take the. pressedsheets from the 2. In a machine of the character described, and incombination with suitable uniting rolls, feed-rolls and cooling rolls,an

. acid-supply roll located between the path of the ingoing sheets, andarranged and adapted to supply acid to the contiguous sidesof saidsheets preliminary to applying the uniting medium.

3. In .a machine for uniting metal sheets and the like, a revolubleacid-applying roll, means for directing one sheet .ito engagement withthe roll on one side of its axis,

means for directing another sheet into engagement with the roll on theoppositeside applied to their contiguous surfaces. I

4. In a machine for uniting m'etal sheets and the like, a hollowacid-supplying roll provided with discharge orifices. in. its periphery,and with an absorbent jacket, in combination with pressure rollersoppositely engaging its periphery, and means for 'directing two sheetsrespectively between the said opposite pressure rollers and theacidsupplying roll whereby the two ingoing the metal sheets aresimultaneously held against the acid supplying roll and supplied withacid upon their contiguous faces.

5. In a machine foruniting metal sheets and the like, the combinationwith suitable feeding, soldering'and coo ing rolls, of an oscillatorysolder tanksuspended in' the path of an ingoing metal sheet which tiltssaid tank, and discharges the solder on said sheet. i

6. In a machine for soldering metal sheets, an oscillatory solder tankoperated by an ingolng sheet, and means connected with the tank forautomatically shutting off the solder supply upon the Withdrawal of saidsheet. 'l 7 In a machine for soldering metal sheets and the like, thecombination with suitable anda tin supply tank in which one of thesoldering rolls revolves.

8. In a machine for soldering metal sheets and the like, the combinationwith suitable feeding and cooling rolls, of a soldering tank, a tinsupply tank, means for supplying a acid to the upper face of an ingoingsheet,

means for supplying acid to the lower face of said sheet, a pair ofsoldering rolls, and means for heating said rolls and tank.-

9. The combination of means for feeding forward a metal sheet, means forapplying another metal sheet to a face-of the first named sheet and forsoldering the two together, and means for applying a coating of tin tothe face of the first named sheet which is opposite that to which thesecond sheet is united.

10.\In a machine for soldering or uniting metal sheets, anacid-supplying roller interposed between the two sheets to be united, incombination with means for holding the sheets to the roller, whereby thecontiguous sides ofthe sheets are simultaneously supplied with acidpreparatory to receiving solder.

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY A. A. 'EICHMANN.

Witnesses ADOLF Gr. BAUSMER, GEO. A. THORMANN.

